Valve-fitting



W. GRIKSCHEII.

VALVE FITTING.

APPLICATION FILED'IAN- 2, 19 20.

Patented May 3, 1921,

4 awowim Wail f am GrcAsc 71 air a hwwkm UNITED STATES PATENT OFFICE.

VALVE-FITTING.

Specification of Letters latent.

Patented May 3, 1921.

Application filed January 2, 1920. Serial No. 348,879.

'To all 20 ham it may concern:

Be it known that 1, WILLIAM Gmxsonnrr, a citizen of the United States ofAmerica, residing at Detroit, in the county of Wayne and State ofMichigan, have invented certain new and useful Improvements inValve-Fittings, of which the 'following 1.s a specification, referencebeing had therein to the accompanyin drawings.

The invention re ates to valve fittings particularly designed for use asdrain cocks,

. another portion to drainage.

and it is the object of the invention to obtain a construction in whichthe valve may be alternatively opened to drain the system, completelyclosed, or closed to cut oif one portion of the conduit while opening Tothis end, the invention consists in the construction as hereinafter setforth.

In the drawings:

Figure 1 is a longitudinal section through the fitting;

. Figs. 2 and 3 are similar v1ews showing the valves in diiferentpositions of adjustment.

A i s-the body of the fitting which, as shown, is of T-shaped formhaving a nipple portion B for attachment to one conduit and a nipple Cfor attachment to another conduit. The nipples B and C are bored tointersect each other, and a counterbore D in the T-head axially alinedwith the nipple B forms a central chamber communicating with each bore.E is a plug or cap for engaging the end of the counterbore D, beingthreaded for engaging internal threads in the member A and beingcentrally bored and threaded for the reception of a valve stem F. Thisvalve stem has at its inner end a head portion G of larger diameter andpreferably provided with opposite conical faces, the inner one beingadapted to seat against the shoulder J formed by the intersection of thebore of the nipple B with the recess D, while the opposite conical faceis adapted to seat against a shoulder K on the plug or cap E. The stem Fis hollow and in rear of thehead G is provided with ports H whichcommunicate with the recess D when the head G is away from the seat onthe cap E. I is an operating handle secured to the outer end of the stemF, so as to be rotatively attached thereto.

With the construction as described, when the. valve is in the positionshown in Fig.

as to permit flow of liquid, as, for instance,

from a supply tank to a carburetor. Where It is desired to drain thewhole system, the valve 1s. adjusted to the position shown in F 1g. 1,where the head G is separated from the seat K, but is also away from theseat J. Therefore, there is open communication between the recess D andthe hollow valve stem and also open passages between each of the nipplesand said recess. When the valve is adjusted into the position shown inFig. 2, connection between the recess D and the nipple B is cut off bythe engagement of the head G with the seat J. There is, however, opencommunication between the nipples C and recess D and between the latterand hollow stem.

The construction is one which is very useful for it is frequentlydesirable to drain one portion of a conduit line, while retaining thefluid in another portion. Again, at other times it is desirable to drainthe entire system or to cut off all drainage connection. Theconstruction is also exceedingly simple and inexpensive to manufactureand as the valve cannot be detached without removing the cap E, there isno danger of accidental displacement.

What I claim as my invention is:

1. A valve fitting comprising a casing having a passage extendingtherethrough and an enlargement atone point therein, a valve within saidenlargement having a hollow stem extending out from said casing with aport in said stem for communication with the enlargement in saidpassage, and seats with which said valve may be alternatively engaged torespectively interrupt said passage and cut off communication betweensaid port and passage, said valve when in intermediate positionproviding drainage connection between said passage and the hollow stem.

2. A valve fitting comprisin a casing having an angling passage theretrough and an opening opposite one portion of said angling passage, a capfor closin said opening,

a hollow stem passing throug said cap and said cap with which said valvemay be alternatively engaged to interrupt said passage and to Cut offcommunication between said passage and port, said valve when inintermediate position providing drainage communication between saidpassage and the hollow stem.

3. A valve fitting comprising a casing of angling form and havingpassages in the angling portions thereof intersecting each other, anopening in said casing opposite one of said angling passages and beingof greater diameter than said passage, a cap for closing said opening, ahollow stem passing throu h said cap provided with a lateral port orcommunicating with said passages, a valve at the inner end of said stemof greater diameter than the passage opposite said opening and saidhollow stem, and seats respectively in said casing and cap with whichsaid valve may be alternatively engaged to cut off connection betweensaid angling passages and said lateral port, said valve clamped in anintermediate position opening drainage communication from said passagesthrough said port and hollow stem.

4. A valve fitting comprising a substantiallyT-shaped casing havingpassages in the angling portions thereof intersecting each other and acounterbore in the head portion of the T forming an enlarged chamber atthe intersection of said passages, a cap for closing the'outer end ofsaid counterbore, a hollow stem passing through and having a threadedengagement with said cap, said stem having also a lateral port forcommunicating with said counterbore, a valve'at the inner end of saidstem, seats respectively on said casing and cap with which said valvemay be alternatively engaged to cut off communication between saidangling portions and between said port and counterbore, and-a handle atthe outer end of said hollow stem for adjusting the same.

In testimony whereof I aflix my signature.

WILLIAM GRIKSCHEIT.

